Eliott,
you should be able to get a nice smooth idle, it may need tuning in TPS rather than MAP, its more responsive for starters, but there are a few tricks to getting a good idle.

Start with setting the advance at 15-17deg at the 4 boxes around the idle RPM and load and set the VE table with the same value in the 4 boxes around idle, so that the fueling doesnt change at all. Then adjust all 4 boxes together in the fuel table to get a strong idle.
cheers,
Phil

6 Years later - time for an update.
Yep, Seriosly - this car has been parked up that long since failing it's IVA - due to the owner having house moves etc.
Had time to get the engine running up to temperature and adjust the fueling to around 14.0afr - where it idles the best, any leaner and it seems to hunt around a bit.
We put the snap-on gas analyser on it and it was blowing about 5-600 at 900rpm and dropped down to 200-300 at around 1800rpm - Both figures are an easy IVA pass (1200PPM for pre-cat engine). Unfortunately a minute after putting the analyser on, one of the oil hoses blew off the cooler and flooded the garage with oil - so nosecone needs to come of yet again.

So whilst i think the cam is a bit racy, It should pass an IVA with a modest tune on it.